<template>
	<div class="login-container">
		<el-form
			ref="formRef"
			:model="loginForm"
			:rules="loginRules"
			class="login-form"
			auto-complete="on"
			label-position="left"
		>
			<div class="title-container">
				<h3 class="title">尚品汇后台管理</h3>
			</div>
			<el-form-item prop="username">
				<span class="svg-container">
					<svg-icon name="ele-UserFilled" />
				</span>
				<el-input
					ref="username"
					v-model="loginForm.username"
					placeholder="Username"
					name="username"
					type="text"
					tabindex="1"
					auto-complete="on"
				/>
			</el-form-item>
			<el-form-item prop="password">
				<span class="svg-container">
					<svg-icon name="ele-Lock" />
				</span>
				<el-input
					:key="passwordType"
					ref="passwordRef"
					v-model="loginForm.password"
					:type="passwordType"
					placeholder="Password"
					name="password"
					tabindex="2"
					auto-complete="on"
					@keyup.enter.native="handleLogin"
				/>
				<span
					class="show-pwd"
					@click="showPwd"
				>
					<svg-icon
						:name="
							passwordType === 'password'
								? 'ele-Hide'
								: 'ele-View'
						"
					/>
				</span>
			</el-form-item>
			<el-button
				:loading="loading"
				type="primary"
				style="width: 100%; margin-bottom: 30px; height: 40px"
				@click.native.prevent="handleLogin"
				>登 陆</el-button
			>
		</el-form>
	</div>
</template>

<script lang="ts">
	export default {
		name: 'Login',
	};
</script>

<script lang="ts" setup>
	import { useUserInfoStore } from '@/stores/userInfo';
	import type { FormInstance } from 'element-plus';
	import { nextTick, ref, watch } from 'vue';
	import { useRoute, useRouter } from 'vue-router';

	const userInfoStore = useUserInfoStore();
	const route = useRoute();
	const router = useRouter();
	const loginForm = ref({
		username: 'admin',
		password: '111111',
	});
	const loading = ref(false);
	const passwordType = ref('password');
	const redirect = ref('');
	const passwordRef = ref<HTMLInputElement>();
	const formRef = ref<FormInstance>();

	const validateUsername = (rule: any, value: any, callback: any) => {
		if (value.length < 4) {
			callback(new Error('用户名长度不能小于4位'));
		} else {
			callback();
		}
	};
	const validatePassword = (rule: any, value: any, callback: any) => {
		if (value.length < 6) {
			callback(new Error('密码长度不能小于6位'));
		} else {
			callback();
		}
	};
	//表单数据校验规则
	const loginRules = {
		username: [{ required: true, validator: validateUsername }],
		password: [
			{ required: true, trigger: 'blur', validator: validatePassword },
		],
	};

	watch(
		route,
		() => {
			redirect.value = route.query && (route.query.redirect as string);
		},
		{ immediate: true }
	);

	/* 
切换密码的显示/隐藏
*/
	const showPwd = () => {
		if (passwordType.value === 'password') {
			passwordType.value = 'text';
		} else {
			passwordType.value = 'password';
		}
		//nxetTick :当响应式发生改变的时候，获取跟新后的dome
		nextTick(() => {
			passwordRef.value?.focus();
		});
	};

	/* 
点击登陆的回调
*/
	const handleLogin = async () => {
		await formRef.value?.validate();
		loading.value = true;
		const { username, password } = loginForm.value;
		try {
			await userInfoStore.login(username, password);
			router.push({ path: redirect.value || '/' });
		} finally {
			loading.value = false;
		}
	};
</script>

<style lang="scss">
	/* 修复input 背景不协调 和光标变色 */
	/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

	$bg: #283443;
	$light_gray: #fff;
	$cursor: #fff;

	@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
		.login-container .el-input input {
			color: $cursor;
		}
	}
	/* reset element-ui css */
	.login-container {
		background-image: url(../../assets/bg.jpg);
		background-color: #2d3a4b;
		background-size: cover;
		.el-input {
			display: inline-block;
			height: 47px;
			width: 85%;
			.el-input__wrapper {
				width: 100%;
				background-color: transparent;
				box-shadow: none;
				input {
					background: transparent;
					border: 0px;
					-webkit-appearance: none;
					border-radius: 0px;
					padding: 12px 5px 12px 15px;
					color: $light_gray;
					height: 47px;
					caret-color: $cursor;

					&:-webkit-autofill {
						box-shadow: 0 0 0px 1000px $bg inset !important;
						-webkit-text-fill-color: $cursor !important;
					}
				}
			}
		}

		.el-form-item {
			border: 1px solid rgba(255, 255, 255, 0.1);
			background: rgba(0, 0, 0, 0.1);
			border-radius: 5px;
			color: #454545;
		}
	}
</style>

<style lang="scss" scoped>
	$bg: #2d3a4b;
	$dark_gray: #889aa4;
	$light_gray: #eee;

	.login-container {
		min-height: 100%;
		width: 100%;
		background-color: $bg;
		overflow: hidden;

		.login-form {
			position: relative;
			width: 520px;
			max-width: 100%;
			padding: 160px 35px 0;
			margin: 0 auto;
			overflow: hidden;
		}

		.tips {
			font-size: 14px;
			color: #fff;
			margin-bottom: 10px;

			span {
				&:first-of-type {
					margin-right: 16px;
				}
			}
		}

		.svg-container {
			padding: 6px 5px 6px 15px;
			color: $dark_gray;
			vertical-align: middle;
			width: 30px;
			display: inline-block;
		}

		.title-container {
			position: relative;

			.title {
				font-size: 26px;
				color: $light_gray;
				margin: 0px auto 40px auto;
				text-align: center;
				font-weight: bold;
			}
		}

		.show-pwd {
			position: absolute;
			right: 10px;
			top: 10px;
			font-size: 16px;
			color: $dark_gray;
			cursor: pointer;
			user-select: none;
		}
	}
</style>
